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Chronometric Age Extension

The Chronometric Age extension is a vocabulary maintained by the Darwin Core Maintenance Interest Group. It includes a glossary of terms (in other contexts these might be called properties, elements, fields, columns, attributes, or concepts) intended to facilitate the sharing of information about chronometric ages and the techniques used to determine them by providing identifiers, labels, and definitions.

Getting started

Chronometric Age Extension Quick Reference Guide

Documents:

Community:

Repo structure

The repository structure is described below. Files/directories indicated with GENERATED should not be edited manually.

├── .github
│   └── CONTRIBUTING.md       : Guide on how to contribute
│
├── build
│   ├── README.md                 : Workflow for generating a new version of the vocabulary
│   ├── build-termlist.ipynb      : Juyter notebook to construct the term list
│   ├── build.py                  : Build script to generate distribution files from the normative document
│   ├── generate_term_versions.py : Script to build the terms_versions.csv file
│   ├── qrg-list.csv              : List of the term IRIs in the order that they are to appear in the Quick Reference Guide
│   ├── requirements.txt          : List of libraries required by the build scripts
│   ├── termlist-footer.md        : Footer to append to the generated term list document
│   ├── termlist-header.md        : Header to prepend to the generated term list document
│   └── terms.tmpl                : A Jinja2 template to generate the Quick Reference Guide
│
├── dist                               : GENERATED Distribution files generated by build.py
│   ├── ChronometricAge_yyyy-mm-dd.xml : GENERATED XML files for the versions of Chronometric Age Extension needed by IPT
│   ├── simple_chrono_horizontal.csv   : GENERATED CSV file with Chronometric Age terms as a row
│   └── simple_chrono_vertical.csv     : GENERATED CSV file with Chronometric Age terms as a column
│
├── docs
│   └── terms
│   │   └── index.md      : GENERATED Content for Quick Reference Guide generation using Jekyll
│   ├── _config.yml       : Jekyll site configuration for Quick Reference Guide
│   ├── list
│   │   └── index.md      : Content for Term list document generation using Jekyll
│   └── index.md          : Header for Quick Reference Guide generation using Jekyll
│
├── vocabulary
│   └── term_versions.csv : Chronometric Age term versions, contains the complete history of the terms
│
├── .gitignore            : Files and directories to be ignored by git
├── LICENSE               : Repository license
└── README.md             : Description of this repository

Contributors

List of contributors

License

Creative Commons Attribution 4.0 International License

Recommended citation

For the Chronomtric Age Extension in general, consider the peer-reviewed article:

Brenskelle L, Davis E, Wieczorek J, Lefebvre M, Wallis N, Emery K, Guralnick R (in prep) It’s Time For Better Reporting of Absolute Age In Species Occurrence Databases.

For this repository:

Darwin Core Maintenance Interest Group, Biodiversity Information Standards (TDWG) (2020). Chronometric Age Extension. Zenodo. https://doi.org/x

The citation above represents all versions of the repository. Specific versions/releases from 2018 onwards are also deposited on Zenodo.

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